CN109338039A - A kind of steelmaking converter slag former and preparation method thereof - Google Patents
A kind of steelmaking converter slag former and preparation method thereof Download PDFInfo
- Publication number
- CN109338039A CN109338039A CN201811481819.9A CN201811481819A CN109338039A CN 109338039 A CN109338039 A CN 109338039A CN 201811481819 A CN201811481819 A CN 201811481819A CN 109338039 A CN109338039 A CN 109338039A
- Authority
- CN
- China
- Prior art keywords
- slag former
- partial size
- steelmaking slag
- moisture
- pneumatic steelmaking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
- C21C7/0645—Agents used for dephosphorising or desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses a kind of steelmaking converter slag formers and preparation method thereof, by weight percentage include following raw material: manganese mineral powder 40~45% that quartz sand 40~45% that partial size is 0.149~5mm, partial size are 0.149~5mm, the dedusting ash 35~40% that partial size is 0.074~0.149mm, the metallic silicon power 3~5% of partial size < 0.044mm, partial size < 0.044mm cement 5~8%；The bonding agent 0.8~1% of additional partial size < 0.044mm；The steelmaking converter slag former contains by weight percentage: MnO >=2%, TFe >=20%, SiO245~50%, P≤0.15%, S≤0.15%, moisture≤4.5%.The present invention is by recycling waste dedusting ash in steelmaking converter, slag making raw material is added and is prepared into cooled agglomerated pellet return converter use, the consumption recycled iron resource, reduced iron and steel raw material, it is also able to achieve quick slag making, dephosphorization efficiency is improved, has purified molten steel, reduces pollution, reduce production cost.
Description
Technical field
The present invention relates to iron and steel smelting technology field, especially a kind of steelmaking converter slag former and preparation method thereof.
Background technique
With the increasing of Environmental pollution management, steelmaking converter primary dedusting is turned to by traditional wet dedusting
Dry method dust, dry method electrostatic precipitation technique have obtained development energetically, by devaporizer obtain the primary ash of converter dry ash and
The secondary ash of converter dry ash is obtained instead of converter mud by electrostatic precipitator, and it is most in addition to steel slag to become steelmaking converter
Converter waste by-products, by taking one 4,000,000 tons of iron and steel enterprise as an example, about 100,000 tons of every annual output converter dust-removing ash, wherein three
/ mono- is primary ash, remaining is secondary ash.In converter dry dedusting ash contain TFe > 50%, active calcium oxide 15%~
20%, the economic benefit and social benefit of recycling are more and more significant.
In order to promote the recovery rate of slag making, labor intensity is reduced, the now current domestic steel mill shape more universal with slag former
State is cooled agglomerated pellet, which is bulk, falls goods by automotive and enters storage bin, by belt-conveying to storehouse is weighed, can pass through
System accurately carries out ingredient, to achieve the purpose that fining steel-making.
Although cooled agglomerated pellet has corresponding advantage, but compared with traditional baking process, there are still corresponding drawbacks, first is that by
In using cooled agglomerated pellet technique pressure ball, first ball moisture generally remains in 8~9%, needs the water of its natural drying to 4.5%
Point, this will put into a large amount of place and time；Second is that using traditional handicraft pressure ball, although maintaining initial strength,
Later strength is lower, and loading machine scraper process generates second-time breakage, and transports to high hopper, falls and generates two during beating
Secondary broken, the powder of generation is taken away by blower, causes the raising of user cost.
Summary of the invention
The technical problems to be solved by the present invention are: a kind of steelmaking converter slag former is provided, by dedusting steel-smelting converter ash
It is recycled as raw material.
To solve above-mentioned technical problem the technical scheme adopted by the invention is that: a kind of steelmaking converter slag former, by weight
Measuring percentages includes following raw material:
Partial size be 0.149~5mm quartz sand 40~45%,
Partial size be 0.149~5mm manganese mineral powder 40~45%,
Partial size be 0.074~0.149mm dedusting ash 35~40%,
The metallic silicon power 3~5% of partial size < 0.044mm,
The cement 5~8% of partial size < 0.044mm；
The bonding agent 0.8~1% of additional partial size < 0.044mm；
The steelmaking converter slag former contains by weight percentage: MnO >=2%, TFe >=20%, SiO245~
50%, P≤0.15%, S≤0.15%, moisture≤4.5%.
Further, by weight percentage, the quartz sand contains SiO2>=90%, moisture≤5%, P≤
0.15%, S≤0.15%；The manganese mineral powder contains MnO >=23%, moisture≤10%, P≤0.15%, S≤0.15%；It is described
Dedusting ash contains TFe >=60%, moisture≤10%, P≤0.15%, S≤0.15%；The metallic silicon power contain elemental silicon >=
90%, moisture≤10%, P≤0.15%, S≤0.15%；The cement is portland cement, containing moisture≤1%, P≤
0.15%, S≤0.15%；The bonding agent is that cellulose adds starchy material, containing moisture≤1%, P≤0.15%, S≤
0.15%.
Further, by weight percentage, the raw material from moisture content be 7~8%.
Further, the size of the steelmaking converter slag former is 30~45mm.
The invention also discloses the preparation methods of above-mentioned steelmaking converter slag former, comprising the following steps:
A, quartz sand, manganese mineral powder, dedusting ash, cement, metallic silicon power and bonding agent are mixed by weight ratio, is added water and stirred
Compression moulding after uniformly；
B, steelmaking converter slag former is made after molding after cloth, natural drying.
Further, in step a, amount of water be quartz sand, manganese mineral powder, dedusting ash and bonding agent total weight 2~
3%.
Further, mixing time is 3~4min in step a.
Further, mixed raw material is pressed into the pelletizing that specification is 35~45mm in step b.
Further, cloth uses three-dimensional matrice cloth, and lateral, longitudinal cloth is controllable in step b, passes through and go up and down skin
Band controls last pelletizing heap height of embankment.
Further, the natural drying time is 2~3 days in step b.
The beneficial effects of the present invention are: the present invention is added by recycling to waste dedusting ash in steelmaking converter
Slag making raw material is prepared into cooled agglomerated pellet and returns to converter use, the consumption recycled iron resource, reduced iron and steel raw material, moreover it is possible to
It realizes quick slag making, improves dephosphorization efficiency, purified molten steel, reduce pollution, reduce production cost.
Specific embodiment
To facilitate the understanding of the present invention, the present invention is further detailed below with reference to embodiment.
A kind of steelmaking converter slag former of the present invention is prepared by the raw material of following weight proportion:
Partial size be 0.149~5mm quartz sand 40~45%,
Partial size be 0.149~5mm manganese mineral powder 40~45%,
Partial size be 0.074~0.149mm dedusting ash 35~40%,
The metallic silicon power 3~5% of partial size < 0.044mm,
The cement 5~8% of partial size < 0.044mm；
The bonding agent of additional partial size < 0.044mm, bonding agent account for the 0.8~1% of above-mentioned raw materials total weight.
The step of preparing steelmaking converter slag former of the present invention are as follows:
A, quartz sand, manganese mineral powder, dedusting ash, cement, metallic silicon power and bonding agent are mixed by weight ratio, is sent into stirring
It is stirred in machine, after being stirred 2min, by 2~3% amount of quartz sand, manganese mineral powder, dedusting ash and bonding agent total weight
It adds water and stirs, total mixing time control can be uniformly mixed in 3~4min；By uniformly mixed raw material by belt transmit into
The first ball of slag former that specification is 35~45mm is pressed into molding machine.
B, ball at the beginning of the slag former of compression moulding is subjected to cloth by three-dimensional matrice cloth system, lateral, longitudinal cloth can
Control, controls last pelletizing heap height of embankment by hoisting belts, depending on rhythm of production, rhythm of production anxiety can be adjusted suitably stacking height
High stacking height, on the contrary then turn down, the sunning time is kept for 48 hours or more, to guarantee that pelletizing curing time is sufficient；Slag former warp
It after natural drying drying in 2~3 days, stacks and is cooled to room temperature naturally, contained humidity≤4.5%, strength test is examined by instrument
It surveys, intensity requirement >=1200N, sample detection physical and chemical index qualification storage is spare.
In the raw material for preparing steelmaking converter slag former of the present invention, dedusting ash is the converter waste in steelmaking converter
Byproduct, dedusting ash contain TFe >=60%, moisture≤10%, P≤0.15%, S≤0.15%.
In other raw materials, quartz sand contains SiO2>=90%, moisture≤5%, P≤0.15%, S≤0.15%, quartz sand
On mine at home can digging arrive, pass through washing process handle quartz sand in SiO2It is able to maintain 90% or more, simultaneously
P, S content is extremely low, SiO2Play the role of a slag making in converter, while can be effectively controlled the basicity of slag；
Manganese mineral powder contains MnO >=23%, and moisture≤10%, P≤0.15%, S≤0.15%, manganese ore is generally in one band of Yunnan
It is in the majority, usually contain 22% or more MnO, a certain amount of iron and SiO2, P, S content are lower, and MnO can effectively promote in converter
It is dissolved into lime, accelerates slagging, reduce cosolvent dosage and lining wear；
Metallic silicon power contains elemental silicon >=90%, moisture≤10%, P≤0.15%, S≤0.15%, and metallic silicon power is too
Positive energy industry monocrystalline silicon piece washing cutting generates, and for usual metal silicone content up to 90% or more, P, S content are extremely low, can be anti-with alkali
A large amount of heat should be generated, is good fever raw material；
Cement uses portland cement, moisture≤1%, P≤0.15%, S≤0.15% in ingredient, and main component is
SiO2And CaO, P, S content are less, using being effective component in converter, while it can help pelletizing in natural drying process
In intensity is substantially improved；
Bonding agent is that cellulose adds starchy material, and containing moisture≤1%, P≤0.15%, S≤0.15%, bonding agent is
Pelletizing provides initial strength, prevents second-time breakage.
According to above-mentioned raw materials and step preparation gained steelmaking converter slag former of the present invention, physical and chemical index such as table
Shown in 1:
The qualified physical and chemical index of table 1
Since moisture is excessively high in use the danger exploded with slag former for steelmaking converter, present invention refining
Steel converter slag former need to control moisture≤4.5%.
For climbing steel Xichang steel vanadium steelmaking converter, the detection of dedusting steel-smelting converter ash physical and chemical index are as follows: TFe 58~62%,
SiO24~6%, CaO 10~14%, P 0.08~0.13%, S 0.05~0.09%, H2O 0.5~1%；Granularity is
0.149-0.074mm or so.It was found from the analysis of the above physical and chemical index: dedusting steel-smelting converter ash TFe content is higher, is conducive to iron
Recycling, and the specific gravity of steelmaking converter slag former can be increased, it is conducive to use；CaO content is higher, can be to steelmaking converter slag making
Agent molding impacts, therefore when raw material is mixed needs sufficient time to complete reacting for CaO and water, and the later period is avoided to be cold-pressed
There is the case where spallation in block；Dedusting ash granularity is thinner, is unfavorable for formed product, it is therefore desirable to addition of the biggish quartz sand of particle with
And manganese ore particle is supported as aggregate.
Embodiment
Quartz sand employed in embodiment, manganese mineral powder and dedusting steel-smelting converter ash, metallic silicon power, portland cement
Physical and chemical index detection case is as shown in table 2:
2 material chemical component detection case of table
The technical indicator of bonding agent in embodiment: white powder, -200 mesh of granularity take functional acceptance mode, and first ball is strong
Spend > 140N.
Embodiment 1
First by the quartz sand of 43 parts by weight, the manganese mineral powder of 9 parts by weight, the dedusting steel-smelting converter ash of 37 parts by weight, 4 parts by weight
Metallic silicon power, 7 parts by weight portland cement and above-mentioned raw materials total weight 0.9% bonding agent weigh after, will be load weighted
Quartz sand, manganese mineral powder, dedusting steel-smelting converter ash, metallic silicon power, portland cement and bonding agent are respectively fed to HN-500 type mixing
It is mixed in blender, adds water 3% after mixing time 2min, then by feed moisture content, stir 2min.It will mix
Even material is sent into XMQ-10 type and is suppressed in pressing machine, and the bulk product of 35~45mm is pressed into.Pass through three-dimensional square
Battle array cloth system is deposited in natural drying place, initial strength average out to 148N, through metallic silicon power exothermic heat of reaction and nature
After sunning maintenance 48 hours, pelletizing later strength average out to 1530N, moisture average 4.1%, the reason of sample detection slag former are detected
Change index (testing result is shown in Table 3), be transported to again after detection is qualified steelwork converter feed bin carry out using.Make in converter steelmaking process
It uses steelmaking converter obtained by the present embodiment to use slag former as slag making materials, carries out 114 furnace of steelmaking converter, additional amount is 7.13~
12Kg/ tons of steel, average 9.57kg/ ton steel, carrying out the slag time is averaged 3.5min, and dephosphorization efficiency average out to 88.7%, finishing slag basicity is put down
It is 4.11
3 embodiment of table, 1 gained steelmaking converter slag former Physico-chemical tests index
| Project | MnO/% | TFe/% | SiO2/ % | P/% | S/% | H2O/% | First ball intensity/N | Later strength/N for 24 hours | Granularity/mm |
| 1 product of embodiment | 2.1 | 22.6 | 49.31 | 0.036 | 0.044 | 4.1 | 148 | 1530 | 35~45 |
Embodiment 2
First by the quartz sand of 40 parts by weight, the manganese mineral powder of 10 parts by weight, the dedusting steel-smelting converter ash of 40 parts by weight, 5 weight
It, will be load weighted after the bonding agent of the metallic silicon power of part, the portland cement of 5 parts by weight and above-mentioned raw materials total weight 1% weighs
Quartz sand, manganese mineral powder, dedusting steel-smelting converter ash, metallic silicon power, portland cement and bonding agent are respectively fed to HN-500 type mixing
It is mixed in blender, adds water 3% after mixing time 2min, then by feed moisture content, stir 2min.It will mix
Even material is sent into XMQ-10 type and is suppressed in pressing machine, and the bulk product of 35~45mm is pressed into.Pass through three-dimensional square
Battle array cloth system is deposited in natural drying place, and the detection initial mean intensity of pelletizing is 163N, after natural drying 60 hours, inspection
Survey pelletizing later period mean intensity is 1396N, product pelletizing average moisture 3.87%, the physical and chemical index (inspection of sample detection slag former
4) survey the results are shown in Table, be transported to again after detection is qualified steelwork converter feed bin carry out using.This implementation is used in converter steelmaking process
Example steelmaking converter uses slag former as slag making materials, carries out 76 furnace of steelmaking converter, additional amount is 8.2~11.6Kg/ tons of steel, average
9.9kg/ tons of steel, carrying out the slag time is averaged 3.7min, dephosphorization efficiency average out to 91.8%, finishing slag basicity average out to 4.45
4 embodiment of table, 2 gained steelmaking converter slag former Physico-chemical tests index
| Project | MnO/% | TFe/% | SiO2/ % | P/% | S/% | H2O/% | First ball intensity/N | Later strength/N for 24 hours | Granularity/mm |
| 2 product of embodiment | 2.41 | 25 | 46.57 | 0.038 | 0.048 | 3.87 | 163 | 1396 | 35~45 |
According to above content and embodiment 1 and embodiment 2: steelmaking converter of the present invention is adopted with slag former preparation process
Exothermic mixture is served as with metallic silicon power, is slowly generated heat in stacking process, pelletizing moisture is reduced, provides the later period using portland cement
Intensity, pelletizing moisture and intensity after natural drying 2~3 days reach user's use demands, have abandoned traditional Roaster
Skill；It is low also to solve the later period pelletizing moisture height occurred in traditional cooled agglomerated pellet production process, intensity simultaneously, takes up an area greatly, it is secondary
The high problem of broken powder rate.
Steelmaking converter produced by the invention is applied in steelmaking converter with slag former can effectively control converter finishing slag basicity,
Shorten and carry out the slag time, improve dephosphorization efficiency, and dedusting steel-smelting converter ash can be effectively utilized, recycles dedusting to the maximum extent
Iron in ash reduces production cost, reduces pollution.It can be seen that steelmaking converter of the present invention is that a kind of realization is high with slag former
The high-quality supplementary material that effect, energy conservation, green are made steel, has a extensive future.
Claims (10)
1. a kind of pneumatic steelmaking slag former, it is characterised in that: by weight percentage include following raw material:
Partial size be 0.149~5mm quartz sand 40~45%,
Partial size be 0.149~5mm manganese mineral powder 40~45%,
Partial size be 0.074~0.149mm dedusting ash 35~40%,
The metallic silicon power 3~5% of partial size < 0.044mm,
The cement 5~8% of partial size < 0.044mm；
The bonding agent 0.8~1% of additional partial size < 0.044mm；
The pneumatic steelmaking slag former contains by weight percentage: MnO >=2%, TFe >=20%, SiO245~50%, P
≤ 0.15%, S≤0.15%, moisture≤4.5%.
2. a kind of pneumatic steelmaking slag former as described in claim 1, it is characterised in that: by weight percentage, the stone
Sand contains SiO2>=90%, moisture≤5%, P≤0.15%, S≤0.15%；The manganese mineral powder contains MnO >=23%, moisture
≤ 10%, P≤0.15%, S≤0.15%；The dedusting ash contains TFe >=60%, and moisture≤10%, P≤0.15%, S≤
0.15%；The metallic silicon power contains elemental silicon >=90%, moisture≤10%, P≤0.15%, S≤0.15%；The cement is
Portland cement contains moisture≤1%, P≤0.15%, S≤0.15%；The bonding agent is that cellulose adds starchy material,
Contain moisture≤1%, P≤0.15%, S≤0.15%.
3. a kind of pneumatic steelmaking slag former as described in claim 1, it is characterised in that: by weight percentage, the original
Expect from moisture content to be 7~8%.
4. a kind of pneumatic steelmaking slag former as described in claim 1, it is characterised in that: the pneumatic steelmaking slag former
Having a size of 30~45mm.
5. the preparation method of pneumatic steelmaking slag former described in Claims 1-4 any one, it is characterised in that: including following
Step:
A, quartz sand, manganese mineral powder, dedusting ash, cement, metallic silicon power and bonding agent are mixed by weight ratio, is added water and stirred uniformly
Compression moulding afterwards；
B, pneumatic steelmaking slag former is made after molding after cloth, natural drying.
6. the preparation method of pneumatic steelmaking slag former as claimed in claim 5, it is characterised in that: in step a, amount of water is
Quartz sand, manganese mineral powder, dedusting ash and bonding agent total weight 2~3%.
7. the preparation method of pneumatic steelmaking slag former as claimed in claim 5, it is characterised in that: in step a, mixing time
For 3~4min.
8. the preparation method of pneumatic steelmaking slag former as claimed in claim 5, it is characterised in that: in step b, after mixing
Raw material be pressed into specification be 35~45mm pelletizing.
9. the preparation method of pneumatic steelmaking slag former as claimed in claim 5, it is characterised in that: in step b, cloth is used
Three-dimensional matrice cloth, lateral, longitudinal cloth is controllable, controls last pelletizing heap height of embankment by hoisting belts.
10. the preparation method of pneumatic steelmaking slag former as claimed in claim 5, it is characterised in that: in step b, dry in the air naturally
Shining the time is 2~3 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811481819.9A CN109338039A (en) | 2018-12-05 | 2018-12-05 | A kind of steelmaking converter slag former and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811481819.9A CN109338039A (en) | 2018-12-05 | 2018-12-05 | A kind of steelmaking converter slag former and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109338039A true CN109338039A (en) | 2019-02-15 |
Family
ID=65319960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811481819.9A Pending CN109338039A (en) | 2018-12-05 | 2018-12-05 | A kind of steelmaking converter slag former and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109338039A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241637A (en) * | 1999-07-29 | 2000-01-19 | 伍发贵 | Compound scorifying agent |
| CN101413042A (en) * | 2008-12-01 | 2009-04-22 | 攀枝花钢城集团有限公司 | Slag-forming constituent and preparation thereof |
| CN102912068A (en) * | 2012-10-19 | 2013-02-06 | 攀钢集团攀枝花钢钒有限公司 | Slagging constituent for semisteel converter steelmaking and manufacturing method thereof |
| CN103484596A (en) * | 2013-09-30 | 2014-01-01 | 攀钢集团攀枝花钢铁研究院有限公司 | Semisteel slag former, preparation method thereof and semisteel making method |
| CN103555936A (en) * | 2013-11-19 | 2014-02-05 | 攀枝花钢城集团有限公司 | Cold-pressing block for steelmaking as well as preparation method thereof |
| CN103993120A (en) * | 2014-06-06 | 2014-08-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for smelting low-sulfur steel with semisteel |
| CN108018417A (en) * | 2017-12-11 | 2018-05-11 | 攀枝花钢城集团有限公司 | Steelmaking converter slagging agent and preparation method thereof |
-
2018
- 2018-12-05 CN CN201811481819.9A patent/CN109338039A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241637A (en) * | 1999-07-29 | 2000-01-19 | 伍发贵 | Compound scorifying agent |
| CN101413042A (en) * | 2008-12-01 | 2009-04-22 | 攀枝花钢城集团有限公司 | Slag-forming constituent and preparation thereof |
| CN102912068A (en) * | 2012-10-19 | 2013-02-06 | 攀钢集团攀枝花钢钒有限公司 | Slagging constituent for semisteel converter steelmaking and manufacturing method thereof |
| CN103484596A (en) * | 2013-09-30 | 2014-01-01 | 攀钢集团攀枝花钢铁研究院有限公司 | Semisteel slag former, preparation method thereof and semisteel making method |
| CN103555936A (en) * | 2013-11-19 | 2014-02-05 | 攀枝花钢城集团有限公司 | Cold-pressing block for steelmaking as well as preparation method thereof |
| CN103993120A (en) * | 2014-06-06 | 2014-08-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for smelting low-sulfur steel with semisteel |
| CN108018417A (en) * | 2017-12-11 | 2018-05-11 | 攀枝花钢城集团有限公司 | Steelmaking converter slagging agent and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102230046B (en) | A method for manufacturing briquettes directly using coal with wide range of size | |
| CN111809045B (en) | Cold pressing block for converter and preparation method thereof | |
| CN102225765A (en) | Mixed pellets composed of fine coal powder and limestone powder for producing calcium carbide | |
| CN103276203B (en) | Production method of stainless steel dusting ash pellets | |
| CN103964404A (en) | Method for producing powdered rock phosphate balls by using powdered rock phosphate | |
| CN108238731B (en) | Superfine slag powder manufactured from blast furnace ferronickel slag and preparation system and method thereof | |
| US5556457A (en) | Recovery of steel plant revert materials through cementitious agglomeration | |
| CN111847409A (en) | Method for producing ground phosphate rock balls by utilizing ground phosphate rock | |
| CN101413042B (en) | Slag-forming constituent and preparation thereof | |
| CN102443674B (en) | Silicon carbide pellet and purpose of pellet as temperature improving agent in converter smelting process | |
| CN108585570A (en) | A method of preparing steam-pressing brisk using modified steel scoria | |
| CN109734337A (en) | A method of high-quality steel-making slag powder is produced based on desulfurized gypsum | |
| CN106350632B (en) | Pneumatic steelmaking light-burned pressure ball and preparation method thereof | |
| CN109338039A (en) | A kind of steelmaking converter slag former and preparation method thereof | |
| CN111747387B (en) | Yellow phosphorus mineral powder pelletizing binder, mineral powder pellets and preparation method thereof | |
| CN110523308B (en) | Mixing method of sintering raw materials | |
| CN101619386B (en) | Iron coke for blast furnaces, preparation method and application thereof | |
| CN100369850C (en) | Comprehensive utilization method for coal gangue and phosphogypsum | |
| CN103555936A (en) | Cold-pressing block for steelmaking as well as preparation method thereof | |
| CN111118238B (en) | Method for preparing steelmaking furnace burden by using blast furnace gas ash zinc extraction kiln slag | |
| US20240287640A1 (en) | Solid agglomerated product based on iron oxides and corresponding production method | |
| CN102952601B (en) | Binder for pressure gasification briquettes | |
| KR100451821B1 (en) | Improvement Method of Incipient Strength of Concrete Using BF Slag Cement | |
| CN114455556B (en) | Binder for phosphate rock powder ball and its preparation method and use | |
| CN111925148B (en) | Composite admixture for cement and concrete production and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190215 |